Use a well rinsed medicine vial, a cork, new fishing bobber or even a piece of non-crumbly styrofoam to float them.
1	Use	use	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	0:root	_
2	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	6:det	_
3	well	well	ADV	RB	Degree=Pos	4	advmod	4:advmod	_
4	rinsed	rinse	VERB	VBN	Tense=Past|VerbForm=Part	6	amod	6:amod	_
5	medicine	medicine	NOUN	NN	Number=Sing	6	compound	6:compound	_
6	vial	vial	NOUN	NN	Number=Sing	1	obj	1:obj	SpaceAfter=No
7	,	,	PUNCT	,	_	9	punct	9:punct	_
8	a	a	DET	DT	Definite=Ind|PronType=Art	9	det	9:det	_
9	cork	cork	NOUN	NN	Number=Sing	6	conj	1:obj|6:conj:or	SpaceAfter=No
10	,	,	PUNCT	,	_	13	punct	13:punct	_
11	new	new	ADJ	JJ	Degree=Pos	13	amod	13:amod	_
12	fishing	fishing	NOUN	NN	Number=Sing	13	compound	13:compound	_
13	bobber	bobber	NOUN	NN	Number=Sing	6	conj	1:obj|6:conj:or	_
14	or	or	CCONJ	CC	_	17	cc	17:cc	_
15	even	even	ADV	RB	_	17	advmod	17:advmod	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	17	det	17:det	_
17	piece	piece	NOUN	NN	Number=Sing	6	conj	1:obj|6:conj:or	_
18	of	of	ADP	IN	_	20	case	20:case	_
19	non-crumbly	non-crumbly	ADJ	JJ	Degree=Pos	20	amod	20:amod	_
20	styrofoam	styrofoam	NOUN	NN	Number=Sing	17	nmod	17:nmod:of	_
21	to	to	PART	TO	_	22	mark	22:mark	_
22	float	float	VERB	VB	VerbForm=Inf	1	advcl	1:advcl:to	_
23	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	22	obj	22:obj	SpaceAfter=No
24	.	.	PUNCT	.	_	1	punct	1:punct	_
